Annual 2020 awards for warmest days

The annual list of stations reporting the highest daily temperature [06-18] across IONA has never been quite the same since the demise of the #03784 Gravesend, Broadness AWS. The concrete and tarmac slabs of Heathrow were responsible for almost fifty of the warmest 366 days in WMO block #03 during 2020, that total combined with those of St James Park and Northolt make London the hot spot on over 20% of days in IONA.

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